Patents by Inventor Jagdeep Shah

Jagdeep Shah has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Wavelength add-drop multiplexing using four-wave-mixing
    Patent number: 6356370
    Abstract: A new method and apparatus provide efficient highly non-degenerate four-wave mixing (FWM) signal in a semiconductor quantum well microcavity device. The phase mismatch between beam incidence angle and microcavity resonance frequency is minimized by using obliquely incident pump and probe beams. The FWM device is used to implement a wavelength multiplexer, a demultiplexer, a packet wavelength multiplexer, a packet demultiplexer, a time division multiplexer, a time division demultiplexer, a wavelength converter, and a wavelength switch.
    Type: Grant
    Filed: April 24, 1998
    Date of Patent: March 12, 2002
    Assignee: Agere Systems Optoelectronics Guardian Corp.
    Inventors: Theodoor Charlouis Damen, Jagdeep Shah, Masahiro Tsuchiya